WARNING: CPU: 0 PID: 9 at kernel/events/core.c:1833 perf_group_attach+0x4c1/0x5a0 kernel/events/core.c:1833
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.20.0-rc5+ #141
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 panic+0x2ad/0x55c kernel/panic.c:188
 __warn.cold.8+0x20/0x45 kernel/panic.c:540
 report_bug+0x254/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:969
RIP: 0010:perf_group_attach+0x4c1/0x5a0 kernel/events/core.c:1833
Code: 8d 7c 24 10 48 89 f8 48 c1 e8 03 42 80 3c 30 00 75 51 4d 8b 64 24 10 49 83 ec 10 4c 39 e3 75 d2 e9 f8 fe ff ff e8 7f ad e9 ff <0f> 0b e9 e0 fc ff ff e8 73 06 2d 00 e9 ea fb ff ff e8 69 06 2d 00
RSP: 0018:ffff8881dae07bb0 EFLAGS: 00010006
RAX: ffff8881d9aec240 RBX: ffff8881c6acec00 RCX: ffffffff8195eaa6
RDX: 0000000000010100 RSI: ffffffff8195ee41 RDI: ffff8881c6b4f758
RBP: ffff8881dae07c48 R08: ffff8881d9aec240 R09: ffffed103b5c0f78
R10: ffffed103b5c0f78 R11: 0000000000000003 R12: ffff8881c6b4f540
R13: 1ffff1103b5c0f78 R14: ffffe8ffffc15298 R15: 0000000000000000
 add_event_to_ctx kernel/events/core.c:2390 [inline]
 __perf_install_in_context+0x5bd/0xb70 kernel/events/core.c:2531
 remote_function+0x12b/0x1a0 kernel/events/core.c:87
 flush_smp_call_function_queue+0x1d2/0x640 kernel/smp.c:243
 generic_smp_call_function_single_interrupt+0x13/0x2b kernel/smp.c:192
 smp_call_function_single_interrupt+0x12f/0x650 arch/x86/kernel/smp.c:296
 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:826
 </IRQ>
RIP: 0010:pids_free+0x0/0x310 kernel/cgroup/pids.c:213
Code: ff ff 4c 89 f7 e8 60 d9 48 00 e9 ac fd ff ff e8 36 d9 48 00 e9 12 ff ff ff e8 5c e4 ce ff 66 90 66 2e 0f 1f 84 00 00 00 00 00 <55> 48 89 e5 41 57 41 56 4c 8d b5 78 ff ff ff 41 55 4c 8d 7d d8 49
RSP: 0018:ffff8881d9aff400 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04
RAX: ffffffff817a1ba0 RBX: 000000000000000b RCX: ffffffff81790196
RDX: 1ffffffff12b869c RSI: ffffffff81790122 RDI: ffff8881ca97a400
RBP: ffff8881d9aff4e0 R08: ffff8881d9aec240 R09: ffffed103952f484
R10: ffffed103952f484 R11: ffff8881ca97a423 R12: dffffc0000000000
R13: ffff8881d9aff438 R14: ffff8881ca97a400 R15: ffffffff895c3460
 __put_task_struct+0x185/0x620 kernel/fork.c:722
 put_task_struct include/linux/sched/task.h:96 [inline]
 delayed_put_task_struct+0x2ff/0x4c0 kernel/exit.c:181
 __rcu_reclaim kernel/rcu/rcu.h:240 [inline]
 rcu_do_batch kernel/rcu/tree.c:2437 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline]
 rcu_process_callbacks+0x100a/0x1ac0 kernel/rcu/tree.c:2697
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 run_ksoftirqd+0x5e/0x100 kernel/softirq.c:654
 smpboot_thread_fn+0x68b/0xa00 kernel/smpboot.c:164
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..